<template>
    <main class="site-content" :class="{ 'site-content--tabs': $route.meta.isTab }">
        <!-- 主入口标签页 s -->
        <el-tabs
            v-if="$route.meta.isTab"
            v-model="mainTabsActiveName"
            :closable="true"
            @tab-click="selectedTabHandle"
            @tab-remove="removeTabHandle">
            <el-dropdown class="site-tabs__tools" :show-timeout="0">
                <i class="el-icon-arrow-down el-icon--right"></i>
                <el-dropdown-menu slot="dropdown">
                    <el-dropdown-item @click.native="tabsCloseCurrentHandle">关闭当前标签页</el-dropdown-item>
                    <el-dropdown-item @click.native="tabsCloseOtherHandle">关闭其它标签页</el-dropdown-item>
                    <el-dropdown-item @click.native="tabsCloseAllHandle">关闭全部标签页</el-dropdown-item>
                    <el-dropdown-item @click.native="refresh()">刷新当前标签页</el-dropdown-item>
                </el-dropdown-menu>
            </el-dropdown>
            <el-tab-pane
                v-for="item in mainTabs"
                :key="item.name"
                :label="item.title"
                :name="item.name">
                <el-card :body-style="siteContentViewHeight">
                    <iframe
                        v-if="item.type === 'iframe'"
                        :src="item.iframeUrl"
                        width="100%" height="100%" frameborder="0" scrolling="yes">
                    </iframe>
                    <keep-alive v-else>
                        <router-view v-if="item.name === mainTabsActiveName"/>
                    </keep-alive>
                </el-card>
            </el-tab-pane>
        </el-tabs>
        <!-- 主入口标签页 e -->
        <el-card v-else :body-style="siteContentViewHeight">
            <keep-alive>
                <router-view/>
            </keep-alive>
        </el-card>
    </main>
</template>

<script>
import {isURL} from '@/utils/validate'

export default {
    inject: ['refresh'],
    data () {
        return {}
    },
    computed: {
        documentClientHeight: {
            get () {
                return this.$store.state.common.documentClientHeight
            }
        },
        menuActiveName: {
            get () {
                return this.$store.state.common.menuActiveName
            },
            set (val) {
                this.$store.commit('common/updateMenuActiveName', val)
            }
        },
        mainTabs: {
            get () {
                return this.$store.state.common.mainTabs
            },
            set (val) {
                this.$store.commit('common/updateMainTabs', val)
            }
        },
        mainTabsActiveName: {
            get () {
                return this.$store.state.common.mainTabsActiveName
            },
            set (val) {
                this.$store.commit('common/updateMainTabsActiveName', val)
            }
        },
        siteContentViewHeight () {
            var height = this.documentClientHeight - 50 - 30 - 2
            if (this.$route.meta.isTab) {
                height -= 40
                return isURL(this.$route.meta.iframeUrl) ? {height: height + 'px'} : {minHeight: height + 'px'}
            }
            return {minHeight: height + 'px'}
        }
    },
    methods: {
        // tabs, 选中tab
        selectedTabHandle (tab) {
            tab = this.mainTabs.filter(item => item.name === tab.name)
            if (tab.length >= 1) {
                this.$router.push({name: tab[0].name, query: tab[0].query, params: tab[0].params})
            }
        },
        // tabs, 删除tab
        removeTabHandle (tabName) {
            this.mainTabs = this.mainTabs.filter(item => item.name !== tabName)
            if (this.mainTabs.length >= 1) {
                // 当前选中tab被删除
                if (tabName === this.mainTabsActiveName) {
                    var tab = this.mainTabs[this.mainTabs.length - 1]
                    this.$router.push({name: tab.name, query: tab.query, params: tab.params}, () => {
                        this.mainTabsActiveName = this.$route.name
                    })
                }
            } else {
                this.menuActiveName = ''
                this.$router.push({name: 'home'})
            }
        },
        // tabs, 关闭当前
        tabsCloseCurrentHandle () {
            this.removeTabHandle(this.mainTabsActiveName)
        },
        // tabs, 关闭其它
        tabsCloseOtherHandle () {
            this.mainTabs = this.mainTabs.filter(item => item.name === this.mainTabsActiveName)
        },
        // tabs, 关闭全部
        tabsCloseAllHandle () {
            this.mainTabs = []
            this.menuActiveName = ''
            this.$router.push({name: 'home'})
        },
        // tabs, 刷新当前
        tabsRefreshCurrentHandle () {
            var tab = this.$route
            this.removeTabHandle(tab.name)
            this.$nextTick(() => {
                this.$router.push({name: tab.name, query: tab.query, params: tab.params})
            })
        }
    }
}
</script>

